"In October, conditions were particularly unfavourable for renewable production," REN said, specifying that the hydroelectric component registered an index of 0.64, wind power 0.82, and solar power 0.93.

According to REN, in October, renewable production "presented the lowest 'share' since September 2023, still supplying 50.2% of consumption," while non-renewable production supplied 18% and the remaining 32% corresponded to imported energy.

Data released indicates that electricity consumption continues to grow in Portugal, having increased by 2.5% from January to October compared to the same period in 2024 (2% adjusted for temperature and working days) and by 1.1% in the last month (1.7% adjusted for temperature and working days) compared to October 2024.

In the natural gas market, the growth trend also continued, with a year-on-year increase of 18% in October, driven by the electricity generation segment, which registered a positive annual growth of over 100% in that month.

Conversely, the conventional segment, which includes other customers, registered a year-on-year decrease of 5.8%.

According to REN in October alone, natural gas consumption registered a year-on-year increase of 13%, resulting from a 131% growth in the electricity generation segment, which offset the 7.7% decrease in the conventional segment.

In the electricity sector, between January and October, the hydroelectric productivity index was 1.33, the wind productivity index was 1.00, and the solar productivity index was 0.89 (historical average of 1).

During this period, renewable production supplied 68% of consumption, slightly below the 72% recorded in the same period of the previous year, divided as follows: hydroelectric with 26%, wind with 24%, photovoltaic with 13%, and biomass with 5%.

REN highlights that photovoltaic production “continues to show high growth, with production 28% higher than in the same period of the previous year”.

Natural gas production supplied 15% of consumption, while the remaining 17% corresponded to imported energy.

In October, the national system was predominantly supplied through the Sines liquefied natural gas (LNG) terminal, with the interconnection with Spain representing 8%.

In the first 10 months of the year, supply also occurred primarily from the Sines terminal, with Nigeria and the USA representing 48% and 43% of the national system's supply, respectively.